/*
 *  Copyright 2011 Yuri Kanivets
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package kankan.wheel.widget.adapters;

import android.content.Context;


/**
 * Numeric Wheel adapter.
 */
public class NumericWheelAdapter extends AbstractWheelTextAdapter
{
   
   /** The default min value */
   public static final int DEFAULT_MAX_VALUE = 9;
   
   /** The default max value */
   private static final int DEFAULT_MIN_VALUE = 0;
   
   // Values
   private final int minValue;
   
   private final int maxValue;
   
   // format
   private final String format;
   
   

   /**
    * Constructor
    * 
    * @param context
    *           the current context
    */
   public NumericWheelAdapter( Context context )
   {
      this( context, DEFAULT_MIN_VALUE, DEFAULT_MAX_VALUE );
   }
   


   /**
    * Constructor
    * 
    * @param context
    *           the current context
    * @param minValue
    *           the wheel min value
    * @param maxValue
    *           the wheel max value
    */
   public NumericWheelAdapter( Context context, int minValue, int maxValue )
   {
      this( context, minValue, maxValue, null );
   }
   


   /**
    * Constructor
    * 
    * @param context
    *           the current context
    * @param minValue
    *           the wheel min value
    * @param maxValue
    *           the wheel max value
    * @param format
    *           the format string
    */
   public NumericWheelAdapter( Context context, int minValue, int maxValue,
      String format )
   {
      super( context );
      
      this.minValue = minValue;
      this.maxValue = maxValue;
      this.format = format;
   }
   


   @Override
   public CharSequence getItemText( int index )
   {
      if ( index >= 0 && index < getItemsCount() )
      {
         int value = minValue + index;
         return format != null ? String.format( format, value )
                              : Integer.toString( value );
      }
      return null;
   }
   


   public int getItemsCount()
   {
      return maxValue - minValue + 1;
   }
}
